METHOD AND APPARATUS FOR SIGNAL DETECTION

摘要

A system for improving uplink performance in a CDMA environment via the implementation of a regularisation method in a multi-user detector. A suboptimal linear multiuser detector having a minimum mean square error (MMSE) detection technique is utilised. In order to obtain an improved estimate of the user's signals, a semi-hard decision rule is used in the regularisation method on an iterative basis. Specifically, a first iteration uses an estimated initial solution (to the regularisation method) and knowledge of a finite data set to obtain a first proposal solution. A second iteration uses a semi-hard proposal solution (to the regularisation method) and the first proposal solution feedback to obtain a second more accurate solution. This process is repeated iteratively.